<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-10-29 -302 18:30:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="14.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 70% PACIFIC flags: F2x cusp not found, One of F2 cusps was derived from the other</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.10.29 (302) 18:30:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.40" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202630210291830009039031101000005014000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="24" >
<URSI ID="00" Val="9.450" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.541" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="24.009" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="4.250" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="4.250" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="9.750" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="275.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="275.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="8.750" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="485.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Modeled Name="foEp" Val="2.776" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="4.250" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="4.250" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="367.349" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="261.600" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="10.278" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="138.250" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="37.284" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="76.843" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="175.590" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.320" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="105">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
275.000 280.000 285.000 287.000 289.000 291.000 293.000 295.000 296.250 297.500 298.750 300.000 300.000 302.372 304.744 307.115 309.487 311.859 314.231 316.603 318.974 321.346 323.718 326.090 328.462 330.833 333.205 335.577 337.949 340.321 342.692 345.064 347.436 349.808 352.179 354.551 356.923 359.295 361.667 364.038 366.410 368.782 371.154 373.526 375.897 378.269 380.641 383.013 385.385 387.756 390.128 392.500 394.872 397.244 399.615 401.987 404.359 406.731 409.103 411.474 413.846 416.218 418.590 420.962 423.333 425.705 428.077 430.449 432.821 435.192 437.564 439.936 442.308 444.679 447.051 449.423 451.795 454.167 456.538 458.910 461.282 463.654 466.026 468.397 470.769 473.141 475.513 477.885 480.256 482.628 485.000 490.000 495.000 500.000 505.000 510.000 520.000 525.000 535.000 545.000 555.000 567.717 582.377 599.465 619.636
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
60 60 57 0 0 0 0 60 0 0 0 60 54 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 60 60 60 57 60 60 60 57 57 54 54 57 0
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -2.734375 -1.953125 2.734375 0.390625 2.734375 1.953125 -0.390625 1.171875 2.734375 -1.171875 -1.171875 1.953125 -1.171875 1.953125 2.734375 -1.171875 2.734375 -2.734375 -1.171875 1.953125 1.171875 0.390625 -1.171875 1.171875 2.734375 -2.734375 -0.390625 -0.390625 -1.953125 2.734375 2.734375 -1.953125 2.734375 1.171875 1.953125 1.171875 1.953125 -1.171875 -1.171875 -2.734375 -2.734375 -0.390625 -1.953125 0.390625 -2.734375 1.171875 0.390625 1.953125 -0.390625 -0.390625 -0.390625 -1.171875 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.586 90.0 95.0 100.0 105.0 110.0 114.244 115.0 118.487 120.0 122.731 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 367.349 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 1.865 2.403 2.686 2.776 2.654 2.654 2.654 2.697 2.776 2.836 2.964 3.09 3.215 3.34 3.466 3.593 3.721 3.852 3.984 4.117 4.253 4.391 4.531 4.673 4.816 4.961 5.108 5.256 5.405 5.556 5.707 5.86 6.013 6.167 6.321 6.477 6.632 6.788 6.945 7.101 7.258 7.414 7.571 7.727 7.883 8.039 8.193 8.346 8.496 8.643 8.787 8.924 9.053 9.171 9.274 9.357 9.416 9.446 9.45 9.449 9.441 9.426 9.404 9.375 9.34 9.298 9.252 9.199 9.142 9.08 9.013 8.943 8.868 8.79 8.709 8.625 8.537 8.448 8.356 8.261 8.165 8.068 7.969 7.868 7.767 7.664 7.561 7.457 7.353 7.248 7.143 7.038 6.933 6.829 6.724 6.62 6.516 6.412 6.309 6.207 6.106 6.005 5.905 5.805 5.707 5.61 5.513 5.418 5.324 5.23 5.138 5.047 4.957 4.868 4.781 4.694 4.609 4.525 4.442 4.36 4.28 4.201 4.123 4.046 3.97 3.895 3.822 3.75 3.679 3.609 3.541 3.473 3.407 3.341 3.277 3.214 3.152 3.092 3.032 2.973 2.916 2.859 2.803 2.749 2.695 2.642 2.591 2.54 2.49 2.442 2.394 2.347 2.3 2.255 2.211 2.167 2.124 2.082 2.041 2.001 1.961 1.922 1.884 1.847 1.81 1.774 1.739 1.704 1.67 1.637 1.605 1.573 1.541 1.511 1.48 1.451 1.422 1.394 1.366 1.338 1.312 1.285 1.26 1.235 1.21 1.186

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.776" PeakHeight="110.0" Num="3" Error="0.0">
-29.995 12.412 -2.831
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.776" EndFrequency="9.45" PeakHeight="367.349" Num="5" zHalfNm="261.6" Error="2.352">
-206.962 -51.017 16.044 -3.842 1.159
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="12.731" Depth="0.122"/>
<TopsideChapman PeakHeight="367.349" PeakDensity="1107971.5" PeakScaleHeight="76.843" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
